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439a1bcac6
linux/drivers/misc
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Kees Cook 439a1bcac6 fortify: Use __builtin_dynamic_object_size() when available 
Since the commits starting with c37495d625 ("slab: add __alloc_size
attributes for better bounds checking"), the compilers have runtime
allocation size hints available in some places. This was immediately
available to CONFIG_UBSAN_BOUNDS, but CONFIG_FORTIFY_SOURCE needed
updating to explicitly make use of the hints via the associated
__builtin_dynamic_object_size() helper. Detect and use the builtin when
it is available, increasing the accuracy of the mitigation. When runtime
sizes are not available, __builtin_dynamic_object_size() falls back to
__builtin_object_size(), leaving the existing bounds checking unchanged.

Additionally update the VMALLOC_LINEAR_OVERFLOW LKDTM test to make the
hint invisible, otherwise the architectural defense is not exercised
(the buffer overflow is detected in the memset() rather than when it
crosses the edge of the allocation).

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Tom Rix <trix@redhat.com>
Cc: linux-hardening@vger.kernel.org
Cc: llvm@lists.linux.dev
Reviewed-by: Miguel Ojeda <ojeda@kernel.org> # include/linux/compiler_attributes.h
Signed-off-by: Kees Cook <keescook@chromium.org>
2023-01-05 12:08:29 -08:00
..
altera-stapl misc: move from strlcpy with unused retval to strscpy 2022-09-01 16:29:42 +02:00
bcm-vk misc: bcm_vk: Remove usage of deprecated functions 2022-09-01 16:29:32 +02:00
c2port
cardreader Merge 5.19-rc6 into char-misc-next 2022-07-11 08:32:58 +02:00
cb710 cb710: avoid NULL pointer subtraction 2021-10-05 15:50:05 +02:00
cxl powerpc updates for 6.2 2022-12-19 07:13:33 -06:00
echo
eeprom misc: eeprom/idt_89hpesx: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
genwqe Driver Core changes for 6.2-rc1 2022-12-16 03:54:54 -08:00
habanalabs Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
ibmasm Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
lis3lv02d misc: lis3lv02d/lis3lv02d_i2c: Convert to i2c's .probe_new() 2022-11-23 19:56:01 +01:00
lkdtm fortify: Use __builtin_dynamic_object_size() when available 2023-01-05 12:08:29 -08:00
mchp_pci1xxxx misc: microchip: pci1xxxx: Fix a memory leak in the error handling of gp_aux_bus_probe() 2022-09-22 16:54:35 +02:00
mei Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
ocxl Driver Core changes for 6.2-rc1 2022-12-16 03:54:54 -08:00
pvpanic misc/pvpanic: Convert regular spinlock into trylock on panic path 2022-04-29 16:54:59 +02:00
sgi-gru misc: sgi-gru: fix use-after-free error in gru_set_context_option, gru_fault and gru_handle_user_call_os 2022-11-23 19:55:48 +01:00
sgi-xp drivers/misc/sgi-xp: Remove orphan declarations from drivers/misc/sgi-xp/xp.h 2022-09-24 14:57:19 +02:00
ti-st ti-st: use tty_write_room 2021-05-13 17:03:20 +02:00
uacce iommu: Remove SVM_FLAG_SUPERVISOR_MODE support 2022-11-03 15:47:45 +01:00
vmw_vmci use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
ad525x_dpot-i2c.c i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
ad525x_dpot-spi.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
ad525x_dpot.c misc: ad525x_dpot: Make ad_dpot_remove() return void 2021-10-13 14:35:37 +02:00
ad525x_dpot.h misc: ad525x_dpot: Make ad_dpot_remove() return void 2021-10-13 14:35:37 +02:00
apds990x.c misc: apds990x: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
apds9802als.c misc: apds9802als: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
atmel-ssc.c misc: update maintainer email address and description for atmel-ssc 2022-08-03 11:03:03 +02:00
bh1770glc.c misc: bh1770glc: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
cs5535-mfgpt.c
ds1682.c misc: ds1682: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
dummy-irq.c
dw-xdata-pcie.c misc: Add Synopsys DesignWare xData IP driver 2021-04-05 13:15:52 +02:00
enclosure.c misc: enclosure: replace snprintf in show functions with sysfs_emit 2021-10-22 11:25:39 +02:00
fastrpc.c Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
gehc-achc.c misc: gehc: Add SPI ID table 2021-10-05 15:47:18 +02:00
hi6421v600-irq.c misc: hi6421-spmi-pmic: Use generic_handle_irq_safe(). 2022-03-02 22:28:50 +01:00
hisi_hikey_usb.c misc: hisi_hikey_usb: change the DT schema 2021-09-14 10:57:31 +02:00
hmc6352.c misc: hmc6352: Convert to i2c's .probe_new() 2022-11-23 19:56:38 +01:00
hpilo.c misc: hpilo: map iLO shared memory by PCI revision id 2021-06-04 15:28:23 +02:00
hpilo.h misc: hpilo: map iLO shared memory by PCI revision id 2021-06-04 15:28:23 +02:00
ibmvmc.c ibmvmc: don't open-code file_inode() 2022-09-01 17:42:27 -04:00
ibmvmc.h
ics932s401.c misc: ics932s401: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
isl29003.c misc: isl29003: Convert to i2c's .probe_new() 2022-11-23 19:56:39 +01:00
isl29020.c misc: isl29020: Convert to i2c's .probe_new() 2022-11-23 19:56:07 +01:00
Kconfig misc: smpro-misc: Add Ampere's Altra SMpro misc driver 2022-11-10 19:03:03 +01:00
kgdbts.c kgdbts: fix return value of __setup handler 2022-03-18 14:17:56 +01:00
lattice-ecp3-config.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
Makefile misc: smpro-misc: Add Ampere's Altra SMpro misc driver 2022-11-10 19:03:03 +01:00
open-dice.c misc: open-dice: Add driver to expose DICE data to userspace 2022-02-04 16:45:39 +01:00
pch_phub.c
pci_endpoint_test.c misc: pci_endpoint_test: Fix pci_endpoint_test_{copy,write,read}() panic 2022-09-09 10:24:12 +02:00
phantom.c
qcom-coincell.c
smpro-errmon.c misc: smpro-errmon: Add Ampere's SMpro error monitor driver 2022-11-10 19:02:43 +01:00
smpro-misc.c misc: smpro-misc: Add Ampere's Altra SMpro misc driver 2022-11-10 19:03:03 +01:00
sram-exec.c mm: Introduce set_memory_rox() 2022-12-15 10:37:26 -08:00
sram.c misc: sram: Add compatible string for Tegra234 SYSRAM 2021-12-08 15:16:05 +01:00
sram.h misc: sram: Only map reserved areas in Tegra SYSRAM 2021-08-05 14:27:46 +02:00
tifm_7xx1.c misc: tifm: fix possible memory leak in tifm_7xx1_switch_media() 2022-11-23 19:55:26 +01:00
tifm_core.c tifm: Remove usage of the deprecated "pci-dma-compat.h" API 2021-09-21 17:33:31 +02:00
tsl2550.c misc: tsl2550: Convert to i2c's .probe_new() 2022-11-23 19:56:05 +01:00
vcpu_stall_detector.c misc: Add a mechanism to detect stalls on guest vCPUs 2022-07-14 16:54:17 +02:00
vmw_balloon.c - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
xilinx_sdfec.c misc/xilinx_sdfec: Replace kmap() with kmap_local_page() 2022-09-09 10:22:36 +02:00